MLS commissioner Don Garber said Wednesday that there is a point at which the league would give up on its quest to add an expansion team in Queens, although building a stadium in Flushing Meadows Corona Park will remain a top priority for at least another year or two.

“We remain bullish but also acknowledge we’ve got a lot of work to do to finalize the deal,” he said at an evening news conference.

Garber said the league’s investment in the proposed privately funded, 25,000-seat stadium constructed on the site of the Fountain of the Planets, along with upgrades to nearby public soccer fields and the replacement of 10 acres of parkland, could cost more than $350 million. He said that reaching an agreement with community, city and state leaders represented “the biggest challenge (MLS has) ever faced.”

“This is an incredibly valuable market and one that is very constrained in terms of real estate and available land. But if you can make here you can really make it anywhere, so it’s worth the effort,” Garber said.

To a point.

“If we’re not able to be successful, we’ll throw our hands up and say, ‘Time for something different’,” he said. “It will be far sooner than three years before we throw our hands up. We’ve been working on this for a couple of years and are hoping to get something finalized this year.”

Orlando City, which plays in the third-tier USL Pro, is working with local officials to reach an agreement on a soccer-specific stadium and is targeting a spot in MLS. Garber reiterated Wednesday that the league also has been in conversations with potential investors in Miami, Minneapolis and Atlanta.

Not on that list was the ownership group of the New York Cosmos, which will begin play in the second-tier NASL this summer. When the Cosmos brand was resurrected in 2010, the organization made its MLS intentions clear. Now under new management, the Cosmos opted to join the NASL instead and have released an ambitious plan for their own stadium adjacent to the Belmont Park racecourse (video above).

“They had a choice to make,” Garber said. “Do they want to vie for a New York City MLS team or do they want to go into the second division? They decided to go into the second division. We support that and want to support the NASL and the USL.”

He said are no “active discussions” with the Cosmos regarding MLS expansion.

Garber hinted that there are multiple parties interested in owning a potential Queens expansion team.

“I’m confident we will finalize a deal with one of those owners ... relatively soon,” he said.

Garber said the proposed soccer stadium would be the first built in New York City without public funding.“We’d love to have public support,” he said. “We get that it’s not going to happen. … We have (to negotiate) a deal that will at least provide us with some ability to have a team that will be able to be successful.”